int B = 11;
int G = 10;
int R = 9;

void setup() {
  Serial.begin(9600);
  Serial.flush();
  pinMode(R, OUTPUT);
  pinMode(G, OUTPUT);
  pinMode(B, OUTPUT);
}

void loop() {
  // Warna Merah
  analogWrite(R, 255);  // Merah
  analogWrite(G, 0);    // Hijau mati
  analogWrite(B, 0);    // Biru mati
  delay(1000);

  // Warna Hijau
  analogWrite(R, 0);
  analogWrite(G, 255);  // Hijau
  analogWrite(B, 0);
  delay(1000);

  // Warna Biru
  analogWrite(R, 0);
  analogWrite(G, 0);
  analogWrite(B, 255);  // Biru
  delay(1000);

  // Warna Putih
  analogWrite(R, 255);  // Putih
  analogWrite(G, 255);
  analogWrite(B, 255);
  delay(1000);
}